image thumbnail

fft_plot function

version 1.0.4 (2.91 KB) by pierre-alexandre chauvenet
Plot signal FFT norm and phase versus frequency and signal versus time. Customizable display, also return FFT data.

539 Downloads

Updated 10 Aug 2020

View License

Function can also return fft results.

optionnal input argument:
- 'legend': 'signal name'
- 'title': 'your title'
- 'window': 'none', 'hann', 'hamming', 'flattop', 'blackman', 'blackmanharris'
- 'subplot': 'fft', 'fft_signal', 'fft_angle', 'all', 'none'
- 'MinNorm': if norm is lower than this value, angle is forced to 0.
(angle makes no sense for small norm)
- 'H1': replace frequency axis with harmonic number (divide frequency axis by H1)
- 'fmin': display frequency fmin to fs/2 (if H1 != 1 then fmin = Harmonic min)
- 'fmax': display frequency 0 to fmax (if H1 != 1 then fmax = Harmonic max)
- 'Amax': display amplitude 0 to Amax
- 'style': 'line', 'stem', 'bar', 'stairs', 'area', (fft norm only)
- 'scale': 'linear', 'semilogx', 'semilogy', 'loglog'
- 'linewidth': number (defaut is 0.5)

Cite As

pierre-alexandre chauvenet (2021). fft_plot function (https://www.mathworks.com/matlabcentral/fileexchange/72124-fft_plot-function), MATLAB Central File Exchange. Retrieved .

https://stackoverflow.com/questions/33962554/finding-the-phase-of-each-harmonics-using-fft

MATLAB Release Compatibility
Created with R2018b
Compatible with any release
Platform Compatibility
Windows macOS Linux

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!